Pentel AIN Stein Refill Leads 0.9 mm Lead Grade:B An internal gear rotates the

An internal gear rotates the lead by about 9° each time the pencil is pressed down

Layout: Ruled — 6 mm line spacing

The 400ml can has a self-cleaning valve

Does it need to be fixed to a desk to work

Pentel AIN Stein Refill Leads 0.9 mm Lead Grade:B An internal gear rotates theThe heaviest diameter in the AIN Stein range a thick, bold graphite lead for heavy handed writing styles, technical shading, storyboard sketching, and field notation where a substantial visible line is required. The ceramic honeycomb core delivers complete break resistance at 0. 9 mm under standard writing conditions. The Hi Polymer resin produces deep, rich lines that adhere tightly to paper grain without the powdery smudging typical of standard